National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Boston, Logan International Airport (KBOS)

Lat: 42.36°NLon: 71.01°WElev: 20ft.

Light Rain

75°F

24°C

Humidity 90%
Wind Speed SW 12 mph
Barometer 30.03 in (1016.9 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 15 Jul 3:54 am EDT
Extended Forecast for

Watertown MA

Heat Advisory July 15, 11:00am until July 17, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: A chance of showers, mainly before 5am. Cloudy, with a low around 72. Southwest wind around 5 mph. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Cloudy through mid morning, then gradual clearing and hot, with a high near 91. Heat index values as high as 96. Southwest wind 3 to 6 mph.

    High: 91 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 72. Southwest wind 3 to 6 mph.

    Low: 72 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 93. Heat index values as high as 99. Southwest wind 3 to 7 mph.

    High: 93 °F

    Hot

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 75. Southwest wind around 7 mph. Chance of precipitation is 20%.

    Low: 75 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms. Partly sunny and hot, with a high near 91. Southwest wind 6 to 10 mph. Chance of precipitation is 50%.

    High: 91 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 77. Southwest wind around 7 mph. Chance of precipitation is 30%.

    Low: 77 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: A chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 89. West wind 6 to 8 mph. Chance of precipitation is 30%.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 66. North wind 3 to 5 mph.

    Low: 66 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of showers, mainly before 5am. Cloudy, with a low around 72. Southwest wind around 5 mph. Chance of precipitation is 30%.
Tuesday
Cloudy through mid morning, then gradual clearing and hot, with a high near 91. Heat index values as high as 96. Southwest wind 3 to 6 mph.
Tuesday Night
Mostly clear, with a low around 72. Southwest wind 3 to 6 mph.
Wednesday
Mostly sunny and hot, with a high near 93. Heat index values as high as 99. Southwest wind 3 to 7 mph.
Wednesday Night
A slight chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 75. Southwest wind around 7 mph. Chance of precipitation is 20%.
Thursday
A chance of showers and thunderstorms. Partly sunny and hot, with a high near 91. Southwest wind 6 to 10 mph. Chance of precipitation is 50%.
Thursday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 77. Southwest wind around 7 mph. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 89. West wind 6 to 8 mph. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 66. North wind 3 to 5 mph.
Saturday
Sunny, with a high near 82. North wind 5 to 7 mph becoming east in the afternoon.
Saturday Night
Partly cloudy, with a low around 66. Southwest wind 3 to 6 mph.
Sunday
A chance of showers. Partly sunny, with a high near 83. Light southwest wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 68. West wind around 6 mph. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 82. West wind 6 to 8 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Watertown MA
 42.37°N 71.16°W (Elev. 46 ft)
Last Update:
1:16 am EDT Jul 15, 2025
Forecast Valid:
4am EDT Jul 15, 2025-6pm EDT Jul 21, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation